Bar support and spacer for concrete-reinforcements.



H. H. LAMPERT.

BAR SUPPORT AND SPACER FOR CONCRETE REINFORCEMENTS.

APPLICATION FILED MAR. H. l9l8.

fiatented Mar. 4,1919.

2 SHEETS-SHEET I.

H. H. LAMPERI.

BAR SUPPORT AND SPACER FOR CONCRETE HEINFORCEMENTS.

APPUCATION F|LD MAR. ll. I'9l8.

Patented Mar. 4, 1919.

2 SHEETSSHEET 2.

HENRY E. LAMPERT. OF CHICAGO, ILLINOIS.

BAR SUPPORT AND SPACER FOR CONCRETE-BEIHFORCEMENTS.

Specification of Letters Patent.

Patented Mar. 4, 1919.

Application filed March 11, 1918. Serial No. 221,722.

To all whom it may concern:

Be it known that I, HENRY H. LAMBERT, a citizen of the United States of America, and. a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Bar Supports and Spacers for Concrete-Reinforcements, of which the following is a specification.

The main objects of this invention are to provide an improved bar supporting and spacing device for concrete reinforcements comprising separately formed supporting members, spacing means, and bar 0 amping means to provide an improved construction or sai separately formed supporting members, clamping means, and spacing means; and to provide an improved manner of assembling said members and means and retaining the same in-their assembled relation.

Illustrative embodiments of this invention are shown in the accompanying drawings in which:

Figure 1 is a fragmentary perspective view of one form of bar supporting and spacing device constructed according to this invention.

Fi 2 is a similar view showing a modified orm.

Fig. 3 is a perspective view of the sup porting member shown in Fig. 1.

Fig. 4 is a perspective view of the supporting member shown in Fig. 2.

Fig. 5 is a fragmentary perspective view showlng a combination of bar clamping means and a spacing means omitting the supporting members.

Fig. 6 is a view similar to Fig. 1 but showing the supporting member arran ed in a different position with respect to t e spacing means, and provided with additional means for securing the members and means together.

Fig. 7 is a modification of the arrangement shown in Fig. 2.

Fig. 8 is a perspective view of the form shown in Fig. 1 with the clamping means bent over a bar.

Fig. 9 is a perspective view of the form shown in Fig. 2 with the clampin means bent over a bar in a somewhat different manner than shown in Fig. 8.

Fig. 10 is a side view illustrating the manner of using the form shown in Fig. 5 above one of the forms shown in the other figures.

In arranging reinforcing bars for concrete construction, it is desirable to have supports which not only permit but insure uniform or predetermined spacing of the bars. This is conveniently accomplished by roviding a plurality of bar clamping mem rs conibined with suitable spacing strips whereby said clamping members are spaced apart in series or groups, and may be set on the falsework on which the concrete is to be poured in such a manner that the most unskilled laborer cannot help but place the bars properly and very expeditiously.

The devices herein shown embody the same general construction-of spacing means 1, bar support-ing means 2, and bar clamping means 3, all of which are separately formed and afterward assembled and secured together in the manner illustrated.

The spacing strip 1 is in the form of a comparatively narrow strip of wrought metal straight from end to end and of uniform cross section and is provided with 7 means coacting with either the supporting means or the clamping means, or both for supporting the parts in their proper assembled relation.

Each of the sup orting members 2 as herein illustrated is ormed from sheet metal so as to provide a seat 4 and depending legs 5 which constitute a substantially inverted U-shaped chair. The legs 5 may or may not be perpendicular to the seat 4 depending upon conditions.

The clamping members 3 are preferably formed of comparatively heavy gage Wire and are adapted to be easily and readily bent over reinforcing bars and have the ends twisted together so as to secure said bars in their proper positions on the spacing stri These clamping members may be various y assembled with the supporting members and spacin strip so that said members are arrange in pairs along said strip.

In the preferred form of construction shown in Figs. 1, 3, and 8, the supporting member 2 is provided with a pair of integral lugs 6 struck up from the seat 4. Each of the lugs 6 is in the form of a comparatively narrow strip disposed parallel to the edge of the seat 4: and having its medial part bent up to form a loop. The strip 1 is provided with a plurality of apertures 6.1 formed at regular intervals along the length thereof so as to permit the upstandings lugs 6 of the supporting members 2 to pass therethrough and extend above the face of said strip sutliciently to allow the insertion of the clamping member or wire 3 through the loops of said lugs, as shown in Figs. 1 and 8, for securing all the parts in their assembled relation. The apertures 6.1 are formed in pairs at certain specified intervals along the length of the strip, the spacing of which is determined by the place where the device is to be used. A plurality of the supporting members are thus arranged in redetermined spaced relation along the strip and said supporting members may be set on the falsework in the desired arrangement with very little trouble and labor, and at the same time positively insure the proper spacing of the bars. In this form of construction, the reinforcing bars 7 are placed over the clamping members 3 so as to rest directly above the seats 4:. The arms of the clamping members 3 are then bent over the bars and twisted as shown in Fig. 8 so as to firmly clamp said bars to the device.

In the modification shown in Figs. 2 and 9, the supporting members 2 are secured to the spacing strip by lugs 8 formed on said strip where it is desired to have the spacing of said members definitely provided for before the devices are shipped for use. In such instance the lugs 8 are preferably formed in pairs at certain specified intervals along the length of the strip and are struck down therefrom and bent around opposite edges of the seat 4 of the supporting mem bers 2. It will of course be observed that the lugs 8 are not essential to assembling the supporting and clamping members on the strip 1 unless it is desired to positively fix the spacing of said members along said strip, Other lugs 9 are struck up from the seat 4 of the supporting members 2 at diagonally opposite sides thereof, as shown in Fig. 4, each of said lugs 9 being provided with an aperture 10 of sufficient diameter to ermit the insertion of the wire or clamp- 1ng member 3 as shown in Fig. 2. The clamping member thus forms means of securing the spacing strip and supporting members in their assembled relation when it is not necessary to locate them at redetermined intervals along the strip. 'l he reinforcing bars are secured to this form of construction either by having the arms of the clamping members 3 bent over said bars in spaced relation to each other in the manner illustrated in Fig. 9, or by having the ends twisted around the same as shown in Fig. 8.

\Vhen it is desired to build the'bars one above the otner as shown in Fig. 10, it is obvious that the supporting members 2 are not essential for the second layer of reinforcing bars, because the spacing strip for said second layer may rest upon the bars beneath it. T e clamping members 3 are secured to this form of spacing strip by means of lugs 11 preferably formed in airs at regular intervals along the length 0 said strip and struck up from the face thereof as shown in Fig. 5, said lugs being of substantially the same form as those shown in Fig. 3, which are struck up from the seat of the supporting member.

In the modification shown in Fig: 6, the construction is similar to that shown in Fig. 1, but the depending legs 5 of the supporting members 2 are disposed transversely to the spacing strip, instead of parallel thereto. Additional fastening means are provided for securing the supporting members to the spacing strip, and comprise a pair of lugs 12 struck down from the strip 1 and bent around opposite edges of the seat 4 of the supporting members 2. A portion of the seat 4 is cut away at opposite edges thereof to permit the lugs 12 to be bent around and more firmly grip said seat.

In the construction shown in Fig. 7, the lugs 12 are formed in the spacing strip 1, substantially the same as in Fig. 6, but a pair of the lugs are formed on each side of the supporting members 2. In this form of construction, the supporting member are of a width not greater than the distance between the oppositely disposed lugs 12, so that it is unnecessary to cut away a portion of the seat 4 as is required in the form I shown in Fig. 6. The clamping member 3 is disposed diagonally beneath the spacin strip and has interlocking engagement with the supporting member 2, by means of apertures formed in the depending legs 5 at diagonally opposite edges thereof.

Apertures 13 are formed at points along the spacing strip 1 so that a series of the supports may be nailed in position on the falsework by a few nails or other fastening means.

As will be obvious other modifications may be made and those shown may be further modified or altered, or have details thereof omitted Without departing from the spirit of this invention as defined by the following claims.

I claim:

1. As an article of manufacture, a spacing and supporting device for bar reinforcements for concrete, comprising a spacing member, a plurality of bar clamping members attached at intervals to said spacing member for securing transverse reinforcing bars thereto, and a corresponding number of supporting members, all of said members being separately formed and afterward assembled, and means on said supporting members adapted to have interlocking engagement with the respective clamping members for holding said supporting members in place.

2. As an article of manufacture, a spacing and supporting device for bar reinforcements for concrete, comprising separately formed spacing means and supporting means, a plum ity of bar clamping members, one of said means having apertures formed therein, and lugs on the other said means extending through said apertures, said clampin members being inserted through said lugs whereby said clamping members and supporting means are assembled in place on said spacing means.

3. As an article of manufacture, a spacing and supporting device for bar reinforcen'lents for concrete, comprising a spacing member, a plurality of bar clamping members and a plurality of supporting members, all of which are separately formed and afterward assembled, and lugs on said supporting members extending above the face of said spacing member, said clamping members being inserted throu h the lugs on respective supporting members whereby said clamping and supporting members are mounted in place on said spacing member.

4. As an article of manufacture, a spacing and supporting device for bar reinforcements for concrete, comprising a spacing member, a plurality of bar clamping memhere and a plurality of supporting members, all of which are separately formed and afterward assembled, said spacing member having apertures formed therein, and lugs on said supporting members extending through said apertures, said clamping members being inserted through the lugs on respective supporting members whereby said clamping and supporting members are mounted in place on said spacing member.

5. As an article of manufacture, a spacing and su porting device for bar reinforcements or concrete, comprising a spaci'ng member having apertures formed therein, a plurality of separately formed supporting members each having a pair of de pending legs connected by a transverse part, lugs struck up from said transverse part and extending through said apertures, and a plurality of separately formed elongated clamping members extending through the'lu on the respective supporting members w ereby said supporting members and clamping members are mounted in pairs at intervals along said spacing member.

Signed at Chicago this 7th day of March,

HENRY H. LAMPERT. 

